EP 0712570 A1 19960522 - Tree harvesting apparatus with impact hammer
Title (en)
Tree harvesting apparatus with impact hammer
Title (de)
Baumerntemaschine mit Schlaghammer
Title (fr)
Appareil de récolte d'arbres avec marteau à coup
Publication
Application
Priority
US 34190594 A 19941115
Abstract (en)
An apparatus (10) for severing a standing tree (48) at a trunk portion thereof includes a housing (12) constructed and arranged to be movable to a tree harvesting location. Holding structure (18) is constructed and arranged with respect to the housing (12) to hold a portion of the stem of the tree while the trunk portion thereof is severed. A cutting blade (32) mounted so as to be movable between retracted and extended position with respect to the tree. Impact hammer structure (38) is operatively coupled to the cutting blade (32) such that successive impacts generated by the impact hammer structure (38) on the cutting blade (32) move the cutting blade (32) progressively through the trunk portion of the tree (48). Actuating structure (30) is operatively associated with the cutting blade (32) and constructed and arranged to move the cutting blade (32) between its retracted and extended positions such that when the cutting blade (32) is in an extended position and in engagement with the trunk portion while the holding structure (18) holds the stem of the tree (48), the successive impacts move the cutting blade to sever the standing tree (48).
IPC 1-7
IPC 8 full level
A01G 23/09 (2006.01)
CPC (source: EP US)
A01G 23/09 (2013.01 - EP US); Y10S 83/928 (2013.01 - EP US)
Citation (applicant)
US 3999582 A 19761228 - ALLEN CHARLES A, et al
Citation (search report)
- [XY] US 3688824 A 19720905 - BODINE ALBERT G
- [Y] US 3731720 A 19730508 - MOSER R, et al
- [Y] US 3421558 A 19690114 - THOMPSON MAX WOOD
- [X] US 2474037 A 19490621 - CUTHRELL ANTUM E
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0712570 A1 19960522; EP 0712570 B1 19981216; AT E174468 T1 19990115; BR 9505174 A 19971028; CA 2160327 A1 19960516; CA 2160327 C 19990202; DE 69506676 D1 19990128; DE 69506676 T2 19990909; FI 114278 B 20040930; FI 955484 A0 19951114; FI 955484 A 19960516; NO 305781 B1 19990726; NO 954531 D0 19951110; NO 954531 L 19960520; US 5465770 A 19951114
DOCDB simple family (application)
EP 95850180 A 19951018; AT 95850180 T 19951018; BR 9505174 A 19951114; CA 2160327 A 19951011; DE 69506676 T 19951018; FI 955484 A 19951114; NO 954531 A 19951110; US 34190594 A 19941115